globalchange  > 气候变化与战略
DOI: 10.5194/hess-24-5875-2020
论文题名:
New measures of deep soil water recharge during the vegetation restoration process in semi-arid regions of northern China
作者: Cheng Y.; Li X.; Wang Y.; Zhan H.; Yang W.; Jiang Q.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2020
卷: 24, 期:12
起始页码: 5875
结束页码: 5890
语种: 英语
Scopus关键词: Arid regions ; Rain ; Reforestation ; Soil moisture ; Soil surveys ; Artificial sand ; Induced infiltrations ; Semi-arid region ; Societal problems ; Soil moisture distribution ; Soil particle size ; Vegetation restoration ; Water balance equation ; Sand ; angiosperm ; comparative study ; evapotranspiration ; lysimeter ; recharge ; reforestation ; root system ; sandy soil ; soil moisture ; water budget ; China ; Artemisia sphaerocephala ; Varanidae
英文摘要: Desertification in semi-arid regions is currently a global environmental and societal problem. This research attempts to understand whether a 40-year-old rain-fed Artemisia sphaerocephala Krasch sand-fixing land as part of the Three North Shelterbelt Program (3NSP) of China can be developed sustainably or not using a newly designed lysimeter to monitor the precipitation-induced deep soil recharge (DSR) at 220 cm of depth. Evapotranspiration is calculated through a water balance equation when precipitation and soil moisture data are collected. A comparison of soil particle sizes and soil moisture distributions in artificial sand-fixing land and neighboring bare land is made to assess the impact of sand-fixing reforestation. Results show that such a sand-fixing reforestation results in a root system being mainly developed in the horizontal direction and a changed soil particle distribution. Specifically, the sandy soil with 50.53% medium sand has been transformed into a sandy soil with 68.53% fine sand. Within the Artemisia sphaerocephala Krasch sand-fixing experimental area, the DSR values in the bare sand plot and Artemisia sphaerocephala Krasch plot are respectively 283.6 and 90.6mm in wet years, reflecting a difference of more than 3 times. The deep soil layer moisture in semi-arid sandy land is largely replenished by precipitation-induced infiltration. The DSR values of the bare sandy land plot and Artemisia sphaerocephala Krasch plot are respectively 51.6 and 2mm in dry years, a difference of more than 25 times. The proportions of DSR reduced by Artemisia sphaerocephala Krasch are 68.06% and 96.12% in wet and dry years, respectively. This research shows that Artemisia sphaerocephala Krasch in semi-arid regions can continue to grow and has the capacity to fix sand. It consumes a large amount of precipitated water and reduces the amount of DSR considerably. © 2020 BMJ Publishing Group. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162525
Appears in Collections:气候变化与战略

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作者单位: Cheng, Y., School of Soil and Water Conservation, Beijing Forestry University, Beijing, 100083, China, Jinyun Forest Ecosystem Research Station, School of Soil and Water Conservation, Beijing Forestry University, Beijing, 100083, China; Li, X., Experimental Center of Desert Forestry, Chinese Academy of Forestry, Dengkou, 015200, China; Wang, Y., School of Soil and Water Conservation, Beijing Forestry University, Beijing, 100083, China, Jinyun Forest Ecosystem Research Station, School of Soil and Water Conservation, Beijing Forestry University, Beijing, 100083, China; Zhan, H., Department of Geologyg and Geophysics, Texas AandM University, College Station, TX 77843-3115, United States; Yang, W., Institute of Desertification Control, Chinese Academy of Forestry, Beijing, 100093, China; Jiang, Q., School of Soil and Water Conservation, Beijing Forestry University, Beijing, 100083, China, Jinyun Forest Ecosystem Research Station, School of Soil and Water Conservation, Beijing Forestry University, Beijing, 100083, China

Recommended Citation:
Cheng Y.,Li X.,Wang Y.,et al. New measures of deep soil water recharge during the vegetation restoration process in semi-arid regions of northern China[J]. Hydrology and Earth System Sciences,2020-01-01,24(12)
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